(global-map): Bind [signal t] to ignore, to have

user signals ignored by default.

lisp/bindings.el

@@ -1064,6 +1064,10 @@ language you are using."
 
 (define-key ctl-x-4-map "c" 'clone-indirect-buffer-other-window)
 
+;; Signal handlers
+(define-key global-map [signal] (make-sparse-keymap))
+(define-key global-map [signal t] 'ignore)
+
 ;; Don't look for autoload cookies in this file.
 ;; Local Variables:
 ;; no-update-autoloads: t